Improvement includes:
Data and plots for final vehicle GHGs were double-checked and revised.
Leaflets were simplified for effective purpose.
For the final plot of all emissions, building + GHG, a bar chart was presented.
The GHG emissions in this analysis was performed for Redwood City which consists of 5 ZIP code regions 94061~94065. Out of these five ZIP codes, four are literally existing regions but one is a P.O. Box.
PART I. Analysis of vehicle emissions
LODES 2013 to 2019 data was used to calculate commute emissions for Redwood City as both an origin and destination. The data were read in block levels and transformed to ZIP code level. The destination side used is Redwood City. For mapboxapi routing, the O-D data was summarized to the ZIP-to-ZIP level to reduce the row number of data.
Vehicle types, LDT1 and LDA, for calculating emissions were assumed and adopted in this analysis.
PART II Analysis of building emissions:
PG&E 2013 to 2019 data were used to calculate building emissions for Redwood City at the ZIP code level. The data were read in block group levels and transformed to ZIP code level.
To determine energy use intensity for the residential usage, Census population data in block group levels were read in and transformed into ZIP code level to estimate residential energy use per resident.
To determine energy use intensity for the commercial usage, LODES WAC data in Zip code level were used to estimate commercial energy use per job.
HDDs and CDDs from the Cal-Adapt Degree Day tool were collected for Redwood City from 2013 to 2019. The residential energy use intensity was further normalized to obtain residential gas in the scale of KBTU/resident/HDD and residential electricity in the scale of KBTU/resident/CDD. The commercial energy use intensity was further normalized to obtain commercial gas in the scale of KBTU/job/HDD and commercial electricity in the scale of KBTU/job/CDD over the period of 2013~2019.
Mapping of Redwood City in census block levels
Mapping of Redwood City in Zip code level: there are 5 ZIP codes in Redwood City. Only four of those are existing regions, and one of those is a P.O.Box.
Outbound commuting routes from Redwood city:
Some of the outbound commuting routes could go as far as the Northern and Southern California. It may be interpreted that some workplace of the commuters recorded may be the main offices of the companies in the Northern and Southern California. Some outboud jobs scatter around the Bay areas including Daly City, Alameda, Emeryville, East Richmond Heights.
Inbound commuting routes to Redwood city: